I recently accompanied a friend to IKEA so she could buy a mattress. My friend was on a tight budget, so she couldn’t afford a fully flame retardant free mattress, like one from Naturepedic, which is Mommy Greenest Approved. But I had a solution: I knew that IKEA’s mattresses were free of brominated flame retardants known as PBDEs, which do not prevent fires and have been linked to developmental, fertility and neurological problems—including autism. She’d get a mattress that was free of the worst flame retardant contenders* then cover it with an organic cotton, PVC-free, waterproof cover to block flame retardant dust (as well as dust mites that cause allergies). Want to try my…